Blower for boilers.



G. BURGESS.

BLOWER FOR BOILERS.

APPLICATION HLED smmzs, 1914,

1,128,406. Patented Fb.16,1915. 1

me/MM \.er.cwnn non nominee.

.mexicanos and september ea, iena.' serial No. eaacva cleaners especially adapted for use in cleanin v.the fines of vertical boilers.

he primary object of my invention is to provide positive and reliable means, in a manner as hereinafter set forth, for expeditiously subjecting the interior of lire tubes or fines to the action or steam or' a gaseous fluid, under preferire, whereby soot, ashes and incrustations are removed from the walls of the lues.

Anotheroobject of this invention is not onl "to remove soot incrustations and for- 7 3 eign matter from the tubes Yor fines of a boiler, but to enable the work to be done while the boiler is steaming or in use and without the necessity of opening any portion of the boiler settings, which opening would allow of the escape of heat.

A further object of this invention is to -provide a blower embodying a reciprocal steam ejecting member adapted to be placed in an operative position by steam admitted to the blower, and retracted by steam after a blowing operation. A still further object of this invention is to provide a simple, durable and ineXp nsive blower that can be advantageously u ed in connection with a vertical boiler,. particularly of the inks type.

The above and other objects are obtained 'by a mechanical constrction that-will be hereinafter specifically described and then claimed, and reference will now the drawing, wherein- Figure 1 is a longitudinal sectional vie of the preferred form of blower7 partly broken away; Fig. 2 is a side elevation of a modified form of blower, partly broken away and partly in section; Fig. 3 is a cross sectional view taken on the line HI-III of Fig. 1; Fig. fl is a similar view taken on the line lV--llf of Fig. 1; Fig. 5 is a similar view taken on the line V-V of Fig/2; and Fig. 6 is a horizontal sectionalview :of a vertical boiler provided be had to vwith blowers in accordance 'with inveiil tion. f

A blower in accordance with' iiiiventicn comprises a tubular body or cylinder l hav-A ing the ends vthereof entericrly screw threaded, as at 2 and 3 to receiye a reduc-- tion nipple l and a cap llie reduction nipple 4f. has a short connection (i with i 7? which is connected to steam' supply pipe 8 provided with a controlling valvez. The

T 7 also constitutes a drain for thetnbnar v body or cylinder l. i

The ca 5 has a concentric opening i@ and reciproca in said opening is a perforated or' apertured steam eje'cting mem.' er 1l. member is arranged longitudinally of the body or cylinder 1 andthe outer end. thereof is closed by a cap or plug 12. The inne? end of the member 11 is connected to hoi? low piston head 13 provided with packing rings 14. The interior of the hollow piston 13 alords a valve seatl for a valve 16, said' valve having' the stern l? entendin through a spider 18 forming part of the he -low piston'. The end of the valve stem 17 has a headv 19 and encircling said valve stein, between the head 19 andthe spider 18 is a coiled compression spring 20 that holds the valve 16 normally seated. In the body or cylinder 1, adjacent the cap 5., is a coiled spring 2l that encircles the member ligand. cushions a reciprocal'movement of the'-meni ber 11 when impinged by the piston l The cap 5 has a connection 22 with a steam aupply pipe 23 and said pipeis provided with an ordinary valve 25': tor' controlling admission of steam to the body or .cylinder 1.;

In Figs. 2 and 5 of the draw: there is illustrated a slight :modifica invention, wherein the blower body or cyl inder 1 has a longitudinal enlargement $35 provided with a by-pass 26 serving faire tionally the same purpose as the steam snpply pipe 23 and the connection 22.

A vertical boiler of the Wicks type is illustrated in Fig. 5 and designated'i", said Vboiler having a baille 28 and Huss 29. The blowers are permanently mountedv in the boiler setting whereby the reciprocal steam eiecting members 11. of the blower can be' shifted into proximity to the heme' 28 to at the flue sheet of the boiler.-

`When steam is admitted to a blower body or cylinder the Euston 13l is moved toward the :inner end ot the olcwer hotly or eylin Sie 'ica

der, thereby rejecting the steam, ejecing member 11. ixnnltaneous with this opere bien the steam under pressure unseets the valve 16 and steam is admitted to the me1nber 11 and ejected through the perorefeions or apertures thereof. 'iThe inward movementof the member 11 is cushioned by the spring 21 and after the lines 29 o" the boiler have been blo'vvlj;j and thoroughly cleaned, the supply off-swam to the blower body or cylinder 1 is shut ofi' and the supply admitted to the inner end of the body or cylinder 1 through the medium. olf the pipe 23. The steam under pressure then retracts the steam ejecting` member 1l and restores the same to normal position..

The preferred embodiments have been illustrated, but it is to be understood tibet the structurel elements are suscepible to such modicetions and variations es fall Within the scope of the appended claims.

1. ln a blower for boilers, a cylinder, e hollow piston reciprocal therein and lier-- ing open ends, e check valve in the outer end off-said piston and opening direct into said piston, a perforated steam ejecting member concentric with seid cylinder and connected to the outer end of said piston and adapted to be projected from the inner end of seid cylinder, means in the inner end of seid cylinder and encircling said member for cushioning the movement oisaid piston in -oedmit steam thereto whereby seid piston is ressored to normal position.

2. lin n blower for boilers, e' cylinder, hollow pison reciprocal therein and having open ends, e check veli/e et the outer end or scid pison and opening direct, into .seid pison, e, perforzrbed steam ejeceing nie er concentric Willi said cylinder and connected to the ouer end of said piston and adeped to be projected from the inner end oi? cylinder, ineens in the inner end. oi sa cylinder ior cushioning a rnovenienr';col:V seid piston in one direction, e nipple on the oniger end of seid cylinder adapted ivo adlni's; sten fi liereto, :rnd an enlargement longitudinally' of said cylinder provided 'with communicating with the inner end of se' :yliider to admit steam thereto Where seid piston. is restored to normal poe; the bypass oi' seid enlargement having c outer end thereof oii'set to provide clearance Afor seid nipple.

ln -esibn'nony whereof l my signeinc in presence of tivo witnesses.

I GARRETT lBUllGrlSS,

Witnesses 1 GENEVIEVE f5). MGGRAM, KARL H. BUTLER.

il Q 

